Expansion-bolt.



T. HAN-D.

EXPANSION BOLT.

APPL I 9 I 6. 1 ,QQUfi4k-1 Patented Mar. 27, 1917.

.l/V VEN TOR 9 4 27 [WW/V5171 HAND,

A TTOR/VE Y8 oils.

EXPANSION-BOLT.

Specification of Letters Patent.

Patented Mar. 2'7, 1917.

Original application filed. November 19, 1915, Serial No. 62,413.Divided and this application filed May 1,

- 1916. Serial 110.9454? To all whom it may concern:

Be it known that I, TowNsoN HAND, a citizen of the United States, and aresident of New Haven, in the county of New Haven and State ofConnecticut, have invented an Improvement in Expansion-Bolts, of whichthe following is a specification.

This invention is an improvement in bolts employed in connection withrailroad frogs and has particular reference to a divlsion of applicationSerial No. 62,418, filed November 19, 1915.

An object of the invention is the provision of a bolt consisting of amain section, and end sections connected thereto in a novel mannerwhereby said end sections are adjusted laterally relative to the mainsection when the bolt is being fastened so that said end sections willbind against the wall of the bolt opening and thus securely retain saidbolt in looking position.

A further object is to provide a bolt of this character which is simplein construction, easy to manufacture, and effective in carrying out thepurpose for which it is designed.

The inventive idea involved is capable of receiving a variety ofmechanical expressions, one of which, for the purpose of illustratingthe invention, is shown in the accompanying drawing, in which Figure 1is a side elevation of the bolt in looking position and constructed inaccordance with the invention.

Fig. 2 is a similar view showing the parts detached.

Fig. 3 is a partial section showing the manner of interlocking one ofthe end sections with the main section of the bolt.

Fig. 4 is a detail perspective view of the interlocking joint betweenone end of the main seam and one of the end sections.

There is shown in the drawing what is now believed to be a preferredform of the with an inclined surface 11, preferably machined, havingextending laterally therefrom a locking element or lug 12 ofsubstantially triangular formation and having an outer transversesurface 13 arranged at right angles to the longitudinal axis of said endsection. The element 12 also has an inner inclined surface 14 whichcooperates-with the inclined surface 11 to form the substantiallyV-shaped notch, as clearly shown in Fig. 2. The opposite ends of themain section 5 of the bolt are inclined or beveled in oppositedirections as indicated at 15 and each end is cut away to provide a lugreceiving opening 16 of substantially the same formation as the lockingelement 12 and having an inclined or beveled surface 17 adapted to beengaged by the inclined surface 14 of the element 12.

T 0 look the bolt in position, the sections of the same are assembledand inserted into the bolt opening in any structure, such as a fishplate, with the head 10 contacting the surface thereof, and nut 9 thenthreaded upon the end 8 of the section 6. By tightening said nut, theinclined surfaces 14 and 17 will cause the end sections 6 and 7 and themain section 5 to have relative lateral movement in a diagonaldirection, thus causing said sections to bind against the wall of thebolt opening. When the parts are first placed in position, aconsiderable space is left between the transverse surface of the lockingelement and the inner end 18 of the opening 16 in the main section.Mounted in said space is a wedge shaped key 19, which will, at alltimes, maintain the end section in proper position and prevent relativelongitudinal movement between the same and the main section.

l/Vhat is claimed is:

1. A bolt of the character described comprising a main section and endsections of substantially the same diameter as said main sectionassociated with said main section, and means for producing a relativelateral movement between said main and said end sections, whereby thesections of the bolt will bind in a bolt opening.

2. A. bolt of the character described comprising a main section havingdiagonal surfaces and end sections associated with said main section andalso having diagonal surfaces engaging the first named surfaces, one ofsaid end sections being adjustable relative to the main section wherebya lateral movement between said main and end sections in a diagonaldirection is efi'ected to cause the'sections of the bolt to bind ma boltopening. V

3. A locking bolt of the character described comprising a main sectionhaving oppositely beveled ends provided with openings, an end sectionassociated with each end of the main section and having a beveled endadapted to cooperate with the beveled end of'said main section, a lug'formed upon the beveled end of each of the end sections and adapted toengage the opening in the adjacent end of the main.

section, each lug and opening being pro vided with contacting beveledsurfaces whereby to cause relative lateral movement between said mainand end sections when the bolt is being secured in position.

4:. A locking bolt of the character described comprisinga main sectionhaving oppositely beveled ends provided with openings, an end sectionassociated with each end "of the main section and having a beveled endadapted to coeperate with the V beveled end of said 'main section, a ingformed upon the beveled end of each of the end sections and adapted toengage the opening in the adjacent end of the inain section, each lugand "opening being provided with contacting beveled surfaces whereby tocause relativelateral movement between said main and end sections when.sociated therewith, said main and end sections having oppositelybeveled contactin surfaces for producing opposite latera lllYeiDQlli;between said sections when the bolt is being locked in position.

0. A bolt of the character described comprising a main section, endsections associated therewith, said main and end sections havingoppositely beveled contacting surfaces for producing opposite lateralmovement between said sections when the bolt is locked in position, andkeys adapted to be driven .into said main section for causing furtherco-action between said beveled surfaces.

7. A bolt of the character described, comprising a main section and endsections of substantially the same diameter as said main sectionassociated therewith, and means for producing .a diagonal movementbetween said main and end sections whereby the sections of the bolt willbind in a bolt opening.

TOVNSON HAND.

Witnesses:

\VILLIAM N. GOODMAN, ARTHUR ANDERSON.

.Oopies .01 this patent may be obtained for five cents each, byaddressing the Commissioner of Es/cents, Washington, D. G.

